Starter doesnt crank when Warm. Waited for starter/engine to cool 20 min to an hour, and then it cranked. Suspected starter soakback heat. Replaced three rebuilts include Toyota starter with Same?

Starter does not crank when Warm. Waited for starter/engine to cool 20 min to an hour and it would crank. suspected soakback heat to starter. And then on a hot day it would not crank no matter what. I had replaced with two rebuilt starters under warranty, and then with Toyota rebuilt with same no crank situation. Battery is 12.5 V plus.

3 Answers

Did you loadtest your wires to starter and grounds?
How many ohms are you getting from contact
Point to point? There are several good videos on
YouTube related to this. Also have you checked
fuses and relays to starter and ignition circuits? Any
green crusties on these wires or at connections? I
would check all your grounds. Body, engine, battery
and starter. Sand these well and make sure they are
tight. ChrisFix on YouTube has a good video on load
testing starter and wires. Too much resistance in
these wires can cause a no start condition.

Man I have never heard a Toyota having a hot soak starter
problem, how are the cables? Was a voltage drop performed on the
cables both hot and cold? How about adding a heat shied for the
starter or wrapping it in a shielding blanket. You may also what to
check the engine management system, it is possible that it is
generating too high exhaust temperatures.

Also load test your battery. Just because it shows
12.6V while car is off does not mean it will start a car
if a cell is dead. Hold the voltage meter on battery
while trying to start car.
If the voltage goes below 10V, replace the battery.
Keep a close eye on voltage as it is cranking. If it
momentarily goes below 10, still replace.

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